Problems with 576i signals on 480p CRT

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  • December 8, 2025 at 2:02 PM #67980
    Avera
    Participant

      Hi everyone,

      I’m opening this thread because I ran into a very specific issue involving 576i input from a PAL PS3 that the OSSC Pro doesn’t seem to scale to 480p when using Extra AV Out → VGA to a CRT.

      My Setup
      The European CRT is Grundig Lenaro 92 (36” widescreen) – somewhat rare model that has a factory VGA input.

      This CRT only accepts 480p over VGA. It cannot display 576i, 576p, or 720p/1080i natively.
      OSSC Pro with Extra AV Out enabled (used to downscale everything to 480p).
      Cables: Mostly Official component or Retro Gaming Cables / RetroTINK cables. For PS3/PS2 I’m using the RGC component cable (sync on luma).
      Other sources used for comparison:

      The Issue
      The OSSC Pro shows 625i input from the PS3 (correctly detecting 576i) but does not scale it to 480p, so the CRT picture remains scrambled because it can only accept 480p on VGA.

      What’s strange is that:

      PAL PS2 in the menu is reported as 625i (576i). I initially thought it could be pal plus, because i have no problem with OSSC Pro scaling it to 480p perfectly → CRT shows image. In PS2 OPL even forced the resolutions to PAL interlaced to test issues → still works fine.
      PAL GameCube startup in 576i (before i run savegame exploit to access swiss) → OSSC Pro scales 576i to 480p flawlessly → CRT shows image.

      But PAL PS3 in 576i → OSSC Pro does not output 480p through Extra AV Out. Initial setup of PS3 always sets it to lowers base resolution which for PAL is 576i
      Even playing a PAL DVD on PS3 (576i) fails: OSSC Pro seems to pass it through instead of scaling it, so the CRT receives an unsupported signal.

      To get a picture at all, I need to connect the PS3 to another TV and manually set component output to 720p/1080i, because I cannot force the PS3 to output 480p or PAL60 through the system menu (stock PAL PS3).

      Expected behavior
      Since the OSSC Pro can convert 576i → 480p from PS2 and GameCube without issues, I expected the PAL PS3’s 576i to behave the same way.

      Questions
      Is this a known limitation with PS3 576i component input on the OSSC Pro?
      Is the PS3 sending a different 576i timing or color encoding that the Pro is currently passing through instead of scaling?
      Is there a setting I may have overlooked to force 576i → 480p on this source specifically?
      Any insight would be greatly appreciated. I can provide captures, logs, or timings if needed.

      Thanks!

      December 14, 2025 at 12:39 AM #68016
      Avera
      Participant

        I sorted it out. It was the framelock. Forgot to give an update.

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